Correction to: Nature Methods https://doi.org/10.1038/s41592-021-01282-5, published online 1 November 2021.

In the version of this article initially published, there was an extraneous description in Fig. 3 caption. The text “For each box-plot, n = 6 points (cell types)” has been removed, while the adjacent description, “For each box-plot, n = 20 points (cell types),” has been retained.

The change has been made to the HTML and PDF versions of the article.